US8829790B2 - Organic light emitting diode (OLED) display having a reinforcing member - Google Patents

Organic light emitting diode (OLED) display having a reinforcing member Download PDF

Info

Publication number
US8829790B2
US8829790B2 US13/047,639 US201113047639A US8829790B2 US 8829790 B2 US8829790 B2 US 8829790B2 US 201113047639 A US201113047639 A US 201113047639A US 8829790 B2 US8829790 B2 US 8829790B2
Authority
US
United States
Prior art keywords
display
light emitting
oled
organic light
emitting diode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US13/047,639
Other languages
English (en)
Other versions
US20120098736A1 (en
Inventor
Dong-su Yee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Display Co Ltd
Original Assignee
Samsung Display Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Display Co Ltd filed Critical Samsung Display Co Ltd
Assigned to SAMSUNG MOBILE DISPLAY CO., LTD. reassignment SAMSUNG MOBILE DISPLAY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YEE, DONG-SU
Publication of US20120098736A1 publication Critical patent/US20120098736A1/en
Assigned to SAMSUNG DISPLAY CO., LTD. reassignment SAMSUNG DISPLAY CO., LTD. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: SAMSUNG MOBILE DISPLAY CO., LTD.
Application granted granted Critical
Publication of US8829790B2 publication Critical patent/US8829790B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G06F1/169—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations

Definitions

  • the described technology generally relates to an organic light emitting diode (OLED) display.
  • OLED organic light emitting diode
  • An organic light emitting device includes two electrodes and an organic light emitting layer interposed between the two electrodes.
  • One of the two electrodes injects holes and the other injects electrons into the light emitting member.
  • the injected electrons and holes are combined to form excitons and the excitons emit light as discharge energy.
  • One inventive aspect is an organic light emitting diode (OLED) display that is impact-resistant.
  • OLED organic light emitting diode
  • OLED organic light emitting diode
  • a display panel including a display area and a pad area, a bezel receiving the display panel, and a reinforcing member positioned between the pad area of the display panel and the bezel.
  • the lower surface of the pad area of the display panel and the upper surface of the reinforcing member may be separated from each other by a predetermined interval.
  • a cushioning tape positioned between the display area of the display panel and the bezel may be further included.
  • the bezel may include a bottom portion and a side wall portion protruded from the edge of the bottom portion, and the reinforcing member may be in contact with the bottom portion.
  • the reinforcing member may be enclosed by the cushioning tape and the side wall portion of the bezel.
  • the reinforcing member may include a material selected from a group of stainless steel, steel plate cold commercial, aluminum, an aluminum alloy, and a nickel alloy.
  • FIG. 1 is an exploded perspective view of an organic light emitting diode (OLED) display according to an embodiment.
  • OLED organic light emitting diode
  • FIG. 2 is a perspective view showing a state in which a display panel is received at a bezel in FIG. 1 .
  • FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2 .
  • An organic light emitting diode (OLED) display generally includes i) two substrates that are fixed by a sealant, ii) a display panel having a display area and a pad area, iii) a bezel combined to the display panel, and iv) a flexible printed circuit (FPC) electrically connected to the display panel through a flexible printed circuit board (FPCB).
  • a sealant ii) a display panel having a display area and a pad area
  • FPC flexible printed circuit
  • the lateral wall of the bezel is omitted at the portion where the flexible circuit board is contacted such that twisting strength and bending strength at the portion corresponding to the pad area of the display panel among the bezel is reduced.
  • FIG. 1 is an exploded perspective view of an organic light emitting diode (OLED) 100 display according to an embodiment
  • FIG. 2 is a perspective view showing a state in which a display panel is received at a bezel in FIG. 1
  • FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2 .
  • an organic light emitting diode (OLED) display includes a display area A 10 and a pad area A 20 , and has a display panel 20 displaying a predetermined image at the display area A 10 , a bezel 40 combined to the display panel 20 at the rear of the display panel 20 , and a flexible printed circuit (FPC) 36 electrically connected to the display panel 20 through a flexible circuit board 32 .
  • OLED organic light emitting diode
  • the display panel 20 has a first substrate 12 and a second substrate 14 with a smaller size than the first substrate 12 and fixed to the first substrate 12 by a sealant 13 at an edge thereof.
  • the display area A 10 substantially overlapping with the first substrate 12 and the second substrate 14 and actually displaying the image is positioned inside the sealant 13
  • the pad area A 20 on the first substrate 12 is positioned outside the sealant 13 .
  • Subpixels may be disposed in a matrix format in the display area A 10 of the first substrate 12 , and a scan driver (not shown) and a data driver (not shown) to drive the subpixels are positioned between the display area A 10 and the sealant 13 or outside the sealant 13 .
  • Pad electrodes to transmit an electrical signal to the scan driver and the data driver are positioned at the pad area A 10 of the first substrate 12 .
  • the second substrate 14 is combined to the first substrate 12 by the sealant 13 with a predetermined interval therebetween such that driving circuits formed in the first substrate 12 and the organic light emitting elements are sealed from the outside for protection.
  • the second substrate 14 may be an upper substrate of the display panel 20 , and an absorption agent (not shown) may be attached to the inner surface of the second substrate 14 .
  • an integrated circuit chip 30 is mounted as a chip-on-glass (COG) type, and the flexible circuit board 32 is mounted as a chip-on-film (COF) type at the pad area A 20 of the display panel 20 .
  • a protective layer 34 is formed near the integrated circuit chip 30 and the flexible circuit board 32 , thereby covering and protecting the pad electrodes formed at the pad area A 20 .
  • the flexible printed circuit (FPC) 36 In the flexible printed circuit (FPC) 36 , electronic elements (not shown) to process driving signals are mounted, and a connector 38 to transmit external signals to the flexible printed circuit (FPC) 36 is installed.
  • the flexible circuit board 32 fixed to the pad area A 20 is folded into the back side of the bezel 40 such that the flexible printed circuit (FPC) 36 is positioned at the rear surface of the bezel 40 .
  • the bezel 40 includes a bottom portion 42 mounted with the display panel 20 and a side wall portion 44 extending from the edge of the bottom portion 42 except for the portion with which the flexible circuit board 32 is contacted toward the display panel 20 .
  • the side wall portion 44 is in contact with the side surface of the display panel 20 .
  • the bezel 40 may be formed of a material having excellent strength, for example, stainless use steel (SUS), steel plate cold commercial (SPCC), aluminum, an aluminum alloy, a nickel alloy, and the like, and may be completed through a process in which the side wall portion 44 is bent from the bottom portion 42 at about a 90 degree angle. Also, a cushioning tape 48 is positioned between the bottom portion 42 of the bezel 40 and the display area A 10 of the display panel 20 such that the display panel 20 may be fixed to the bezel 40 .
  • SUS stainless use steel
  • SPCC steel plate cold commercial
  • a reinforcing member 50 is positioned between the pad area A 20 of the display panel 20 and the bottom portion 42 of the bezel 40 .
  • the reinforcing member 50 contacts the bottom portion 42 , and the lower surface of the pad area A 20 of the display panel 20 and the upper surface of the reinforcing member 50 are separated from each other by a predetermined interval d 1 . This is to prevent the external impact from being directly transmitted to the pad area A 20 of the display panel 20 .
  • the reinforcing member 50 may be attached to the bottom portion 42 through welding.
  • the reinforcing member 50 is enclosed by the cushioning tape 48 and the side wall portion 44 of the bezel 40 .
  • the reinforcing member 50 includes a metallic material such as stainless use steel (SUS), steel plate cold commercial (SPCC), aluminum, an aluminum alloy, and a nickel alloy.
  • the bezel 40 is combined to the lower surface of the display panel 20 through the cushioning tape 48 thereby having a function of fixing and supporting the display panel 20 .
  • the reinforcing member 50 is formed at a portion that is mechanically weak because the side wall 44 is not provided, that is, at the bottom portion of the bezel 40 corresponding to the portion with which the flexible circuit board 32 is contacted, in order to increase twisting strength and bending strength of the bezel 40 .
  • the reinforcing member 50 is formed at the bottom portion 42 of the bezel 40 to provide uniform strength to the whole bezel 40 such that the deformation amount of the bezel 40 may be decreased during the dropping impact.
  • the twisting and bending applied from the bezel 40 to the display panel 20 is decreased such that the damage to the display panel 20 may be reduced.
  • Table 1 shows measurements of damage to an organic light emitting diode (OLED) display after a comparative organic light emitting diode (OLED) display is mounted on a drop jig and the drop jig is released
  • Table 2 shows measurements of damage to an organic light emitting diode (OLED) display after an organic light emitting diode (OLED) display according to an embodiment is mounted on a drop jig and the drop jig is released.
  • the drop height of a drop jig is 1.1 m, the front side faces downward and a drop is performed in “front side”, and the rear side faces downward and a drop is performed in “rear side”.
  • Eight (#1 to #8) organic light emitting diode (OLED) displays are dropped up to a total of ten times on each of the front side and rear side to determine damage to the organic light emitting diode (OLED) displays.
  • the comparative organic light emitting diode (OLED) display is damaged when the number of drops is an average of 33.13 percent of the total, however, as shown in Table 2, the organic light emitting diode (OLED) display according to an embodiment is damaged when the number of drops is an average of 49.38 percent of the total.
  • the organic light emitting diode (OLED) display according to the present embodiment that includes the reinforcing member 50 at the bottom portion 42 of the bezel 40 provides uniform strength to the whole bezel 40 such that the deformation amount of the bezel 40 may be minimized during the drop impact, and as a result, the twisting load and the bending load that are applied from the bezel 40 to the display panel 20 are decreased such that damage to the display panel 20 may be reduced.
  • the reinforcing member is formed between the pad area of the display panel and the bezel such that the deformation of the portion corresponding to the pad area of the display panel among the bezel may be prevented during an external impact, and thereby the twisting strength and the bending strength may be improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
US13/047,639 2010-10-22 2011-03-14 Organic light emitting diode (OLED) display having a reinforcing member Active 2032-02-16 US8829790B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2010-0103546 2010-10-22
KR1020100103546A KR101792095B1 (ko) 2010-10-22 2010-10-22 유기 발광 표시 장치

Publications (2)

Publication Number Publication Date
US20120098736A1 US20120098736A1 (en) 2012-04-26
US8829790B2 true US8829790B2 (en) 2014-09-09

Family

ID=45972576

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/047,639 Active 2032-02-16 US8829790B2 (en) 2010-10-22 2011-03-14 Organic light emitting diode (OLED) display having a reinforcing member

Country Status (2)

Country Link
US (1) US8829790B2 (ko)
KR (1) KR101792095B1 (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160021746A1 (en) * 2011-10-28 2016-01-21 Apple Inc. Display with Vias for Concealed Printed Circuit and Component Attachment
US20180336817A1 (en) * 2017-05-22 2018-11-22 Lg Display Co., Ltd. Organic light-emitting display device having an upper substrate formed by a metal and method of fabricating the same
US11329037B2 (en) * 2020-06-17 2022-05-10 Wuhan China Star Optoelectronics Technology Co., Ltd. Display module and electronic device

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101973780B1 (ko) * 2012-10-08 2019-04-30 삼성디스플레이 주식회사 표시 장치
KR102037320B1 (ko) * 2013-02-07 2019-10-28 엘지전자 주식회사 로고 일체형 디스플레이 패널을 포함하는 디스플레이 장치
KR101847075B1 (ko) * 2014-12-18 2018-04-09 삼성전자주식회사 전자 장치
US9287329B1 (en) * 2014-12-30 2016-03-15 Lg Display Co., Ltd. Flexible display device with chamfered polarization layer
JP2019012099A (ja) * 2017-06-29 2019-01-24 株式会社ジャパンディスプレイ 表示装置及びその製造方法
KR102621685B1 (ko) * 2018-09-18 2024-01-09 삼성디스플레이 주식회사 터치스크린 및 그를 구비하는 표시장치
KR20230033070A (ko) * 2021-08-26 2023-03-08 삼성디스플레이 주식회사 표시 장치

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050052827A1 (en) * 2003-09-08 2005-03-10 Myoung-Kon Kim Packaging for plasma display module
US20080284940A1 (en) * 2006-02-21 2008-11-20 Jae-Chang Choi Liquid crystal display apparatus
KR100889532B1 (ko) 2008-01-14 2009-03-19 삼성모바일디스플레이주식회사 유기 발광 표시 장치
US20090168318A1 (en) * 2007-12-27 2009-07-02 Chan-Kyoung Moon Organic light emitting diode display
US20090195973A1 (en) * 2008-02-04 2009-08-06 Samsung Mobile Display Co., Ltd. Organic light emitting diode display
KR100918054B1 (ko) 2008-01-02 2009-09-18 삼성모바일디스플레이주식회사 유기 발광 표시 장치
KR100918055B1 (ko) 2008-01-09 2009-09-22 삼성모바일디스플레이주식회사 유기발광 표시장치
US8044586B2 (en) * 2006-09-21 2011-10-25 Samsung Mobile Display Co., Ltd. Organic light emitting display device
US8315070B2 (en) * 2008-12-04 2012-11-20 Samsung Display Co., Ltd. Organic light emitting diode display

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050052827A1 (en) * 2003-09-08 2005-03-10 Myoung-Kon Kim Packaging for plasma display module
US20080284940A1 (en) * 2006-02-21 2008-11-20 Jae-Chang Choi Liquid crystal display apparatus
US8044586B2 (en) * 2006-09-21 2011-10-25 Samsung Mobile Display Co., Ltd. Organic light emitting display device
US20090168318A1 (en) * 2007-12-27 2009-07-02 Chan-Kyoung Moon Organic light emitting diode display
KR100918054B1 (ko) 2008-01-02 2009-09-18 삼성모바일디스플레이주식회사 유기 발광 표시 장치
KR100918055B1 (ko) 2008-01-09 2009-09-22 삼성모바일디스플레이주식회사 유기발광 표시장치
KR100889532B1 (ko) 2008-01-14 2009-03-19 삼성모바일디스플레이주식회사 유기 발광 표시 장치
US20090195973A1 (en) * 2008-02-04 2009-08-06 Samsung Mobile Display Co., Ltd. Organic light emitting diode display
US8315070B2 (en) * 2008-12-04 2012-11-20 Samsung Display Co., Ltd. Organic light emitting diode display

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160021746A1 (en) * 2011-10-28 2016-01-21 Apple Inc. Display with Vias for Concealed Printed Circuit and Component Attachment
US9805643B2 (en) * 2011-10-28 2017-10-31 Apple Inc. Display with vias for concealed printed circuit and component attachment
US10522072B2 (en) 2011-10-28 2019-12-31 Apple Inc. Display with vias for concealed printed circuit and component attachment
US20180336817A1 (en) * 2017-05-22 2018-11-22 Lg Display Co., Ltd. Organic light-emitting display device having an upper substrate formed by a metal and method of fabricating the same
US10892438B2 (en) * 2017-05-22 2021-01-12 Lg Display Co., Ltd. Organic light-emitting display device having an upper substrate formed by a metal and method of fabricating the same
US12022677B2 (en) 2017-05-22 2024-06-25 Lg Display Co., Ltd. Organic light-emitting display device having an upper substrate formed by a metal and method of fabricating the same
US11329037B2 (en) * 2020-06-17 2022-05-10 Wuhan China Star Optoelectronics Technology Co., Ltd. Display module and electronic device

Also Published As

Publication number Publication date
KR20120042065A (ko) 2012-05-03
US20120098736A1 (en) 2012-04-26
KR101792095B1 (ko) 2017-11-02

Similar Documents

Publication Publication Date Title
US8829790B2 (en) Organic light emitting diode (OLED) display having a reinforcing member
US8692461B2 (en) Organic light emitting diode display
KR100965252B1 (ko) 유기 발광 표시 장치
US7773372B2 (en) Organic light emitting diode display
US7957128B2 (en) Organic light emitting diode display
EP2109144B1 (en) Organic light emitting diode display and method of manufacturing the same
US20090207560A1 (en) Electronic device having organic light emitting diode display device
EP2180536B1 (en) Organic light emitting diode display
US8456384B2 (en) Plasma display device
KR100922358B1 (ko) 유기발광 표시장치 및 이를 구비한 전자 기기
KR20210023165A (ko) 표시 장치
KR20120096353A (ko) 유기발광 표시장치를 구비한 전자 기기
US20090179557A1 (en) Organic light emitting diode (OLED) display
US8502446B2 (en) Organic light emitting diode display
KR100918055B1 (ko) 유기발광 표시장치
KR20090099268A (ko) 유기 발광 표시 장치
KR100918056B1 (ko) 유기발광 표시장치 및 이를 구비한 전자 기기
KR100918057B1 (ko) 유기발광 표시장치
KR20230098519A (ko) 초박형 디스플레이 장치
CN118116281A (zh) 折叠显示终端
KR20090076678A (ko) 유기 발광 표시 장치

Legal Events

Date Code Title Description
AS Assignment

Owner name: SAMSUNG MOBILE DISPLAY CO., LTD., KOREA, REPUBLIC

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YEE, DONG-SU;REEL/FRAME:025983/0411

Effective date: 20110201

AS Assignment

Owner name: SAMSUNG DISPLAY CO., LTD., KOREA, REPUBLIC OF

Free format text: MERGER;ASSIGNOR:SAMSUNG MOBILE DISPLAY CO., LTD.;REEL/FRAME:028921/0334

Effective date: 20120702

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551)

Year of fee payment: 4

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 8